Search results
Results From The WOW.Com Content Network
Nicotine is an addictive substance found most commonly in tobacco and tobacco products including cigarettes, cigars, chewing tobacco, e-cigarette liquid, pipe tobacco, snus, snuff, and nicotine medications such as nicotine gum. Withdrawal is the body’s reaction to not having the nicotine it had become accustomed to.
While cigarettes are the most commonly used tobacco product, all forms of tobacco use—including smokeless tobacco and e-cigarette use—can cause dependence. [3] [10] Nicotine dependence is a serious public health problem because it leads to continued tobacco use and the associated negative health effects. Tobacco use is one of the leading ...
Using chewing tobacco increases the risk of fatal coronary heart disease and stroke. [25] [26] In 2010 more than 200 000 people died from coronary heart disease due to smokeless tobacco use. [27] Use of chewing tobacco also seems to greatly raise the risk of non-fatal ischaemic heart disease among users in Asia, although not in Europe. [25]
The LD 50 of nicotine is 50 mg/kg for rats and 3 mg/kg for mice. 0.5–1.0 mg/kg can be a lethal dosage for adult humans, and 0.1 mg/kg for children. [19] [20] However the widely used human LD 50 estimate of 0.5–1.0 mg/kg was questioned in a 2013 review, in light of several documented cases of humans surviving much higher doses; the 2013 review suggests that the lower limit causing fatal ...
Nicotine use for tobacco cessation has few contraindications. [71] It is not known whether nicotine replacement therapy is effective for smoking cessation in adolescents, as of 2014. [72] It is therefore not recommended to adolescents. [73] It is not safe to use nicotine during pregnancy or breastfeeding, although it is safer than smoking.
Smoker melanosis in a patient consuming 2 packs of cigarette per day. Smoking or the use of nicotine-containing drugs is the cause to Smoker's melanosis. [10] [11] Tar-components (benzopyrenes) are also known to stimulate melanocytes to melanin production, and other unknown toxic agents in tobacco may also be the cause.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The chemicals in tobacco may act as irritants in this condition. [2] Chronic heat exposure is also responsible. Pipe smoking produces more heat on the palate than any other forms of smoking. Long-term drinking of very hot beverages can also cause a similar condition. The severity of the changes correlates with the frequency of the habit. [6]